regression
Judging by the Community, it seems like the Alteryx business model is to crowdsource documentation. Do the same for a QA checklist. The 2019.4 release of Server shipped with some major regressions, notably:
DE21143 Workflow events no sending Email
DE22751 32-bit OCI connections not working in 2019.4 release
The QA team should publish the QA checklist and allow feedback from the community. The entire point of the community is to make the users and the product better. Let the users see which scenarios are tested and add ideas here for the QA team to utilize.